Spiral conveyer.



Patented Sept. 30, I902.

No.-7l0,387.

C. G. WILLIAMS. SPIRAL comnswzn. (Applicatiop filed Mar. 26, 1902.)

(No Model.)

WITNESSES UNITED STATES PATENT OFFICE.

CAREY G. \VILLIAMS, OF DALTON, IOIVA.

SPIRALCONVEYER.

SPECIFICATION forming part of Letters Patent No. 710,387, datedSeptember 30, 1902.

Application filed March 26. 1902. Serial No. 100,048. (No model.)

To all w/wm it may concern.-

Be it known that I, CAREY G. WVILLIAMS, a citizen of the United States,and a resident of Dalton, in the county of Plymouth and State of Iowa,have invented new and useful Improvements in Spiral Con veyers, of whichthe following is a full, clear, and exact description.

The invention relates to spiral conveyors for moving grain and othermaterials; and its object is to'provide certain new and usefulimprovements in spiral conveyers, whereby the several sections of thespiral shaft can be readily and securely fastened together and any onesection requiring repairs can be readily removed at any time withoutdisturbing the other sections.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

Apractical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate cor.- responding parts in allthe views.

Figure 1 is a longitudinal sectional elevation of the improvement. Fig.2 is a longitudinal sectional elevation of the joint or coupling foradjacent shaft-sections. Fig. 3 is a perspective view of thecoupling-plug, and Fig. 4 is an enlarged cross-section of theimprovement on the line 4 4 of Fig. 2.

. The sections A and A of the conveyer-spiral are provided with shafts Band B, carrying the spiral blades 0 and C, respectively, and eachshaft-section is preferably made tubular,ordii1ary gas-pipe beingpreferably employed for the purpose. The shaft-sections B and B areconnected with each other bya coupling-plug D, formed at its middle witha round or journal portion D, mounted to turn in a bearing E, secured tothe conveyor-case F, as plainly shown in Fig. 1.

The ends D and D of the coupling-plug D are preferably made square andfit into tongues B and B formed on the ends of the shaft-sections B andB, the said tongues 13 and B being preferably U-shaped in crosssection,so as to engage three sides of the square ends D and D Clips G engagethe ends D and D and the corresponding tongues 13 and B to securelyfasten the latter to the coupling-plug, each clip extending throughregistering recesses D B in the plug ends and the tongues, so as to holdthe same against longitudinal movement one on the other.

In practice I cutthe end of the tube or gaspipe in a lengthwisedirection corresponding to the length of the ends D and D and then makean incision in a transverse direction at the end of the longitudinalcut, so as to allow of forming this end of the tube or pipe into the Ushaped tongue for engaging and fitting the end D of the coupling-plug.In this manner a very simple, strong, and durable coupling is hadbetween the sections of the spiral conveyor, and in case repairs areneeded on one of the sections such section can be readily detached byremoving the clips and then disengaging the tongues of the section fromthe coupling-plug without taking the latter out of the bearings E.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A spiral conveyer, having a blade-shaft made insections, the ends of adjacent sections having projecting tongues made Ushape in cross section, a couplingplug having a middle journal portionand projecting ends made square in cross-section for engaging the saidtongues, and clips for clipping the said tongues and the ends of theplug together, as set forth.

2. A spiral conveyer, having a blade-shaft made in sections, the ends ofadjacent sections having projecting tongues made U shape incross-section, a coupling-plug having a middle journal portion andprojecting ends made square in cross-section for engaging the saidtongues, and clips for clipping the said tongues and the ends of theplug together, the clips engaging registering recesses in the saidtongues and ends of the coupling member, to hold the said plugandtongues from longitudinal movement one on the other, as set forth.

3. A spiral conveyer having a blade-shaft made in tubular sections, theends of adjacent sections having projecting portions U- shaped incross-section, a coupling-plug having a journaled portion, andprojecting ends ICO engaging said U-shaped portions of the shafti Intestimony whereof I have signed my sections, the ends of thecoupling-plug being name to this specification in the presence 01":provided with transverse recesses registering two subscribing witnesses.

with recesses in the side members of the U- CAREY G. \VILLIAMS. shapedportions of the shaft-sections, and clips engaging said registeringrecesses, as set forth.

XVitnesses:

W. G. BOLSER, A. R; LANDI.

